I have the Weiand Stealth hi-rise manifold on my Duster 360 with a Comp 280H cam. Very similiar to the Edelbrock Performer RPM.

Both excellent manifolds for a mildly built 340-360 combo imo.

1970 FE5 Duster 360/904/3.91's SOLD 1973 TB3 SpaceDuster 340/4spd/4.10's SOLD Moparless for now but when the opportunity is right I'll have another one.